Software that respects your privacy.

MerryStone, Inc. builds simple, private apps for everyday life. Our first app, MyFi, helps you understand your spending without handing over your bank login.

MyFi Home screen showing total spending and a breakdown of spending by category

MyFi — private spending insights for iPhone

Import a statement from your bank or credit card, and MyFi shows where your money goes. It flags charges that look like duplicates and totals what your subscriptions cost each year. There's no account and no bank login, and your data never leaves your phone.

  • No sign-up and no bank login

  • Works offline, with nothing to re-link

  • Finds possible duplicate charges and forgotten subscriptions

  • Pay once, with no subscription

MyFi Trends chart of monthly dining spending, with high months flagged against the median
MyFi Recurring screen showing monthly and yearly subscription costs, a possible duplicate charge, and an unusual charge

About MerryStone

MerryStone, Inc. is an independent software company. We make tools that are useful, beautiful, and private by default.

Questions, press, or partnerships: wleslie@merrystoneinc.com